What it is: An innovative gel pencil creates the natural or fuller-looking brows you want instantly. What it does: It glides on easily for long-wearing, buildable, water-resistant color that lasts up to 12 hours. It blends and sets with a built-in spooled brush- Dermatologist tested; ophthalmologist tested Style Name: Estee Lauder Brow Now Brow Defining Pencil. Style Number: 1166155. Available in stores.